Expression of Arabidopsis HOMEODOMAIN GLABROUS 11 Enhances Tolerance to Drought Stress in Transgenic Sweet Potato Plants

2011 ◽  
Vol 55 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Long Ruan ◽  
Lijuan Chen ◽  
Yihong Chen ◽  
Jinling He ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Sweet Potato ◽  
Potato Plants

Accumulation of carbon and nitrogen compounds in sweet potato plants grown under deficiency of N, P, or K nutrients

1995 ◽  
Vol 41 (3) ◽  
pp. 557-566 ◽  
Author(s):  
Mitsuru Osaki ◽  
Hiroyuki Ueda ◽  
Takuro Shinano ◽  
Hirokazu Matsui ◽  
Toshiaki Tadano
Keyword(s):  
Sweet Potato ◽  
Nitrogen Compounds ◽  
Carbon And Nitrogen ◽  
Potato Plants

scholarly journals Plant age and genotype affect the bacterial community composition in the tuber rhizosphere of field-grown sweet potato plants

2014 ◽  
Vol 88 (2) ◽  
pp. 424-435 ◽  
Author(s):  
Joana M. Marques ◽  
Thais F. da Silva ◽  
Renata E. Vollu ◽  
Arie F. Blank ◽  
Guo-Chun Ding ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Sweet Potato ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Plant Age ◽  
Potato Plants

scholarly journals A Novel WRKY Transcription Factor from Ipomoea trifida, ItfWRKY70, Confers Drought Tolerance in Sweet Potato

2022 ◽  
Vol 23 (2) ◽  
pp. 686
Author(s):  
Sifan Sun ◽  
Xu Li ◽  
Shaopei Gao ◽  
Nan Nie ◽  
Huan Zhang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Transgenic Plants ◽  
Drought Tolerance ◽  
Sweet Potato ◽  
Stress Responses ◽  
Leaf Tissue ◽  
Stomatal Aperture ◽  
Ros Scavenging ◽  
Ipomoea Trifida ◽  
Positive Role

WRKY transcription factors are one of the important families in plants, and have important roles in plant growth, abiotic stress responses, and defense regulation. In this study, we isolated a WRKY gene, ItfWRKY70, from the wild relative of sweet potato Ipomoea trifida (H.B.K.) G. Don. This gene was highly expressed in leaf tissue and strongly induced by 20% PEG6000 and 100 μM abscisic acid (ABA). Subcellar localization analyses indicated that ItfWRKY70 was localized in the nucleus. Overexpression of ItfWRKY70 significantly increased drought tolerance in transgenic sweet potato plants. The content of ABA and proline, and the activity of SOD and POD were significantly increased, whereas the content of malondialdehyde (MDA) and H2O2 were decreased in transgenic plants under drought stress. Overexpression of ItfWRKY70 up-regulated the genes involved in ABA biosynthesis, stress-response, ROS-scavenging system, and stomatal aperture in transgenic plants under drought stress. Taken together, these results demonstrated that ItfWRKY70 plays a positive role in drought tolerance by accumulating the content of ABA, regulating stomatal aperture and activating the ROS scavenging system in sweet potato.

scholarly journals Se-O Bond Is Unique to High Se Enriched Sweet Potato Stem Protein with Better Antioxidant Ability

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3064
Author(s):  
Qi Gao ◽  
Jia-Le Wu ◽  
Lan-Ping Jiang ◽  
Su-Qi Sun ◽  
Xue-Jun Gu ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Energy Dispersive Spectrometry ◽  
Structural Characteristics ◽  
Radical Scavenging ◽  
Dpph Radical ◽  
Enrichment Method ◽  
Potato Plants ◽  
Ft Ir ◽  
Dpph Radical Scavenging ◽  
Thermal Stability Of

Sweet potato plants were treated with selenium (Se). Spraying Se on the sweet potato leaves was an effective Se enrichment method and proteins were extracted from the sweet potato stem. The structural characteristics of the protein were investigated. Fourier transform infrared spectroscopy (FT-IR) detected more signals from the Se-enriched sweet potato stem protein (SSP), and the number of forms of Se chemical bonds gradually increased with increasing Se content, such as the Se-O bond in high Se-enriched SSP, indicating altered secondary structures.Scanning electron microscopy-energy dispersive spectrometry (SEM-EDS) indicated more Se atoms in the Se-enriched SSPs (SSSPs). The DSC results revealed that Se enrichment enhanced the thermal stability of the samples. Moreover, selenomethionine (SeMet), selenocystine (SeCys2), and methylselenocysteine (MeSeCys) were determined to be the main Se forms in the SSSPs. Furthermore, the SSSPs showed relatively higher superoxide anion radical and DPPH radical scavenging activities than the blank, which indicates that SSSPs can be used as antioxidants. By recovering the proteins, the agricultural by-product—sweet potato stem can be further utilized, and the obtained Se-enriched proteins may contribute to human health.

scholarly journals Herbicide Evaluation for Sweet Potatoes

1969 ◽  
Vol 66 (4) ◽  
pp. 254-260 ◽  
Author(s):  
Lii-Chyuan Liu ◽  
Edwin Acevedo-Borrero ◽  
F. H. Ortiz
Keyword(s):  
Weed Control ◽  
Sweet Potato ◽  
Tuber Yield ◽  
Potato Cultivar ◽  
Weed Competition ◽  
Sweet Potatoes ◽  
Minimum Rate ◽  
Potato Plants ◽  
Herbicide Treatments ◽  
Rate Controlled

Two herbicide experiments were carried out in 1980 to evaluate Alachor and Metribuzin alone or combined for weed control in sweet potato cultivar Miguela at the Isabela and Fortuna Substations, Metribuzin at 1.12 kg ai/ha rate controlled effectively both broadleaf weeds and grasses. A minimum rate of 6.73 kg ai/ha of Alachor was needed for acceptable weed control. Metribuzin at the 1.12 kg al/ha rate in combination with Alachor at the 3.36 kg ai/ha rate provided the best weed control. There was no visible herbicide injury to sweet potato plants at the Isabela Substation. Moderate crop injury as a consequence of Metribuzin application at 2.24 kg ai/ha was apparent at the Fortuna Substation. The highest tuber yield was obtained with Metribuzin at 1.12 kg ai/ha in combination with Alachor at 3.36 kg ai/ha at both Substations. Metribuzin at 1.12 kg ai/ha rate alone or in combination with any other herbicide also produced good tuber yield. Sweet potatoes with standard herbicide treatments, Diphenamid and Chloramben, yielded poorly because of weed competition.

scholarly journals NIRS Estimation of Drought Stress on Chemical Quality Constituents of Taro (Colocasia esculenta L.) and Sweet Potato (Ipomoea batatas L.) Flours

2020 ◽  
Vol 10 (23) ◽  
pp. 8724
Author(s):  
Carla S. S. Gouveia ◽  
Vincent Lebot ◽  
Miguel Pinheiro de Carvalho
Keyword(s):  
Drought Stress ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Near Infrared ◽  
Model Development ◽  
Colocasia Esculenta ◽  
N Protein ◽  
Germplasm Screening ◽  
Fast Prediction

Taro (Colocasia esculenta (L.) Schott) and sweet potato (Ipomoea batatas (L.) Lam.) are important food crops worldwide, whose productivity is threatened by climatic constraints, namely drought. Data calibration, validation, and model development of high-precision near-infrared spectroscopy (NIRS) involving multivariate analyses are needed for the fast prediction of the quality of tubers and shoots impacted by drought stress. The main objective of this study was to generate accurate NIRS models for quality assessment of taro and sweet potato accessions (acc.) subjected to water scarcity conditions. Seven taro and eight sweet potato acc. from diverse geographical origins were evaluated for nitrogen (N), protein (Pt), starch (St), total mineral (M), calcium oxalate (CaOx), carbon isotope discrimination (Δ13C), and nitrogen isotopic composition (δ15N). Models were developed separately for both crops underground and aboveground organs. N, Pt, St, and M models could be used as quality control constituents, with a determination coefficient of prediction (r2pred) between 0.856 and 0.995. δ13C, δ15N, and CaOx, with r2pred between 0.178 and 0.788, could be used as an informative germplasm screening tool. The approach used in the present study demonstrates NIRS’s potential for further research on crop quality under drought.

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